Child safety seat alarm system

ABSTRACT

A child safety seat alarm system includes a child safety seat, an alarming device, a detection mechanism and a driving portion. The alarming device is configured to receive a signal and output an alarm signal. The detection mechanism includes a detector and a trigger mechanism. The detector is configured to detect whether states of the alarming device and the detector meet a predetermined criterion. The detector is in a non-working state when the trigger mechanism is in an open state, and the detector is in a working state when the trigger mechanism is in a closed state. When a child is seated in the child safety seat, the driving portion is operated to switch the trigger mechanism from the open state to the closed state so as to switch the detector to the working state. When the detector detects the states of the alarming device and the detector meet the predetermined criterion, the alarming device outputs the alarm signal for alarming. The child safety seat alarm system can remind a user whether or not a child is left in a car for preventing a dangerous scenario where the child is left in the car.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a child safety seat, and morespecifically, to a child safety seat alarm system.

2. Description of the Prior Art

With the increase of family sedans, more and more families choose totravel together. Although travelling by car is convenient, the issue ofchild safety and protection in the car is getting more and moreimportant. Since there are more and more child deaths due to trafficaccidents, child safety seats are designed for solving theaforementioned problem. The child safety seats can reduce injuries onchildren. However, people might leave their child in cars due tonegligence, which brings safety hazards to the child, in severe casesthe child may suffocate and die.

Therefore, it is necessary to provide a child safety seat alarm systemto solve the aforementioned problem.

SUMMARY OF THE INVENTION

It is an objective of the present invention to provide a child safetyseat alarm system which is capable of reminding a user whether or not achild is left in a car for preventing a dangerous scenario where thechild is left in the car.

In order to achieve the aforementioned objective, the present inventiondiscloses a child safety seat alarm system. The child safety seat alarmsystem includes a child safety seat, an alarming device, a detectionmechanism and a driving portion. The child safety seat is for a child tobe seated therein. The alarming device is configured to receive a signaland output an alarm signal. The detection mechanism includes a detectorand a trigger mechanism. The detector is configured to detect whetherstates of the alarming device and the detector meet a predeterminedcriterion. The detector is in a non-working state when the triggermechanism is in an open state, and the detector is in a working statewhen the trigger mechanism is in a closed state. When the child isseated in the child safety seat, the driving portion is operated toswitch the trigger mechanism from the open state to the closed state soas to switch the detector to the working state. When the detectordetects the states of the alarming device and the detector meet thepredetermined criterion, the alarming device outputs the alarm signalfor alarming.

In contrast to the prior art, when the child safety seat alarm system ofthe present invention confirms that the child is seated in the childsafety seat, the driving portion is operated to switch the triggermechanism from the open state to the closed state so as to switch thedetector to the working state. Furthermore, when the detector detectsthat the states of the alarming device and the detector meet thepredetermined criterion, the alarming device outputs the alarm signalfor alarming to remind the user that the child is left in a car. Thisprevents a dangerous scenario where the child is left in the car.

Preferably, the detector is configured to detect a distance between thealarming device and the distance detector.

Preferably, the child safety seat alarm system further includes asensing device configured to sense a state of the child safety seat andcompare the state of the child safety seat with a predetermined triggercriterion, and when the state of the child safety seat meets thepredetermined trigger criterion, the child safety seat alarm systemconfirms that the child is seated in the child safety seat.

Preferably, the predetermined trigger criterion is that the child safetyseat receives a pressure or a buckle assembly of the child safety seatis buckled.

Preferably, the child safety seat includes a crotch strap and a crotchstrap buckle assembly connected to the crotch strap, and buckling of thebuckle assembly of the child safety seat is achieved by buckling of thecrotch strap buckle assembly.

Preferably, the detection mechanism is disposed on the child safetyseat. The driving portion is connected to the crotch strap, and thebuckling of the crotch strap buckle assembly drives the driving portionto move to switch the trigger mechanism to the closed state.

Preferably, the driving portion is rotatably connected to the childsafety seat.

Preferably, the driving portion includes a driving component, a rotatingcomponent connected to the driving component, and a pushing protrusiondisposed on the rotating component. The rotating component is rotatablyconnected to the child safety seat. The driving component is connectedto the crotch strap, and when the crotch strap buckle assembly isbuckled, the driving component is driven to rotate the rotatingcomponent, so as to drive the pushing protrusion to push the triggermechanism to switch to the closed state.

Preferably, the child safety seat alarm system further includes aresilient portion, and the resilient portion drives the pushingprotrusion to move away from the trigger mechanism.

Preferably, the pushing protrusion is an arc-shaped structure.

Preferably, the crotch strap buckle assembly includes a male buckle anda female buckle. The buckling of the crotch strap buckle assembly isachieved by buckling of the male buckle and the female buckle, and thebuckling of the male buckle and the female buckle drives the drivingportion to switch the detector to the working state.

Preferably, the driving portion is a conductor. The driving portion isdisposed on the male buckle. A power source circuit is disposed on thefemale buckle and for electrically connecting with the detector, and thebuckling of the male buckle and the female buckle electrically connectsthe detector with the power source circuit by the driving portion.

Preferably, the driving portion is a conductor. The driving portion isdisposed on the female buckle. A power source circuit is disposed on themale buckle and is electrically connected with the detector, and thebuckling of the male buckle and the female buckle electrically connectsthe detector with the power source circuit by the driving portion.

Preferably, the power source circuit is an open circuit, and thebuckling of the male buckle and the female buckle electrically connectsthe conductor with the power source circuit.

Preferably, the detector is disposed on the power source circuit. Apower source is disposed on the power source circuit and for providingelectricity for the detector, and the buckling of the male buckle andthe female buckle closes the power source circuit by the conductor.

Preferably, the detection mechanism further includes a mounting plateand a power source portion, and the power source portion, the detectorand the trigger mechanism are disposed on the mounting plate.

Preferably, the child safety seat alarm system further includes alinking component, and the buckling of the crotch strap buckle assemblydrives the driving portion to move by the linking component.

Preferably, the trigger mechanism is a switch connected to a wire. Anend of the wire is connected to the detector. The driving portion drivesthe switch to switch between the closed state and the open state, andtherefore, the detector is switched between the working state and thenon-working state.

Preferably, the alarming device is installed on a mobile terminal of auser.

Preferably, the alarming device includes a key chain for connecting witha car key of a user.

Preferably, the alarming device is a mobile phone for receiving thesignal and outputting the alarm signal.

The detailed description and the accompanying drawings are provided asfollows to illustrate to the present invention. The accompanyingdrawings are used to explain the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a child safety seat alarm systemwithout illustrating an alarming device according to an embodiment ofthe present invention.

FIG. 2 is a structural diagram of the child safety seat alarm systemwithout illustrating a base according to the embodiment of FIG. 1 of thepresent invention.

FIG. 3 is a sectional diagram of the child safety seat alarm systemaccording to the embodiment of FIG. 2 of the present invention.

FIG. 4 is an enlarged diagram of an A portion according to theembodiment of FIG. 3 of the present invention.

FIG. 5 is a structural diagram of a detection mechanism of the childsafety seat alarm system according to the embodiment of FIG. 4 of thepresent invention.

FIG. 6 is a structural diagram of the alarming device according to anembodiment of the present invention.

FIG. 7 is a structural diagram of a pushing protrusion of the childsafety seat alarm system according to another embodiment of the presentinvention.

FIG. 8 is an enlarged diagram of a B portion according to the embodimentof FIG. 7 of the present invention.

FIG. 9 is a structural diagram of a trigger mechanism of the childsafety seat alarm system as the trigger mechanism is in an open stateaccording to another embodiment of the present invention.

FIG. 10 is a structural diagram of the trigger mechanism of the childsafety seat alarm system as the trigger mechanism is in a closed stateaccording to the embodiment of FIG. 9 of the present invention.

FIG. 11 is a structural diagram of the child safety seat alarm systemaccording to another embodiment of the present invention.

FIG. 12 is a diagram of a power source circuit of the child safety seatalarm system as the power source circuit is open according to theembodiment of FIG. 11 of the present invention.

FIG. 13 is a diagram of the power source circuit of the child safetyseat alarm system as the power source circuit is closed according to theembodiment of FIG. 11 of the present invention.

REFERENCE SIGNS

Child safety seat 10, base 11, seat body 12, alarming device 20, keychain 21, detection mechanism 30, detector 31, trigger mechanism 33,mounting plate 35, power source portion 37, driving portion 40, drivingcomponent 41, rotating component 43, pushing protrusion 45, linkingcomponent 50, wire 60, crotch strap buckle assembly 70, male buckle 71,female buckle 72, left male buckle 711, right male buckle 713, powersource circuit 80, power source 81.

DETAILED DESCRIPTION

Detailed description of the embodiments of the present invention isillustrated with the accompanying drawings. Similar components aremarked with similar reference numerals in the drawings.

Please refer to FIG. 1 to FIG. 6 . A child safety seat alarm system ofthe present invention includes a child safety seat 10, an alarmingdevice 20, a detection mechanism 30 and a driving portion 40. The childsafety seat 10 is for a child to be seated therein. The alarming device20 is configured to receive a signal and output an alarm signal. Thedetection mechanism 30 includes a detector 31 and a trigger mechanism33. The detector 31 is configured to detect whether states of thealarming device 20 and the detector 31 meet a predetermined criterion.The detector 31 is in a non-working state when the trigger mechanism 33is in an open state, and the detector 31 is in a working state when thetrigger mechanism 33 is in a closed state. When the child is seated inthe child safety seat 10, the driving portion 40 is operated to switchthe trigger mechanism 33 from the open state to the closed state so asto switch the detector 31 to the working state. When the detector 31detects that the states of the alarming device 20 and the detector 31meet the predetermined criterion, the alarming device 20 outputs thealarm signal for alarming. The child safety seat 10 includes a base 11and a seat body 12. In an embodiment, the detection mechanism 30 and thedriving portion 40 are disposed on the seat body 12. However, thepresent invention is not limited thereto.

The predetermined criterion can be a predetermined distance. Thedetector 31 can be configured to detect a distance between the alarmingdevice 20 and the detector 31. For example, the predetermined distancecan be set to 5 meters, and when the detector 31 detects that thedistance between the alarming device 20 and the detector 31 is greaterthan 5 meters, the alarming device 20 can output the alarm signal foralarming. However, the present invention is not limited thereto. Thepredetermined distance can be set according to practical demands.Furthermore, the predetermined criterion can be a predetermined time.For example, when the detector 31 detects a period of that a driverleaves a car is greater than the predetermined time, the alarming device20 can output the alarm signal for alarming. Therefore, thepredetermined criterion is not limited to the aforementioned situation.

Moreover, the child safety seat alarm system further includes a sensingdevice, which is not shown in the figures, configured to sense a stateof the child safety seat 10 and compare the state of the child safetyseat 10 with a predetermined trigger criterion. When the state of thechild safety seat 10 meets the predetermined trigger criterion, thechild safety seat alarm system confirms that the child is seated in thechild safety seat 10. The sensing device can commonly include a pressuresensor or a gravity sensor. The predetermined trigger criterion can bethat the child safety seat 10 receives a pressure or a buckle assemblyof the child safety seat 10 is buckled. For example, a pressure valuereceived by the child safety seat 10 can be detected by the pressuresensor, and when the detected pressure value is greater than apredetermined value, the child safety seat alarm system can determinethat the child is seated in the child safety seat 10. Furthermore, forexample, when the buckle assembly of the child safety seat 10 isbuckled, the child safety seat alarm system also can determine that thechild is seated in the child safety seat 10. Specifically, the childsafety seat 10 includes a crotch strap and a crotch strap buckleassembly connected to the crotch strap, and buckling of a buckleassembly of the child safety seat 10 is achieved by buckling of thecrotch strap buckle assembly. When the predetermined trigger criterionis met, the child safety seat alarm system confirms that the child isseated in the child safety seat 10.

Please refer to FIG. 3 to FIG. 4 . The detection mechanism 30 isdisposed on the child safety seat 10. The driving portion 40 isconnected to the crotch strap, and the buckling of the crotch strapbuckle assembly drives the driving portion 40 to move to switch thetrigger mechanism 33 to the closed state. In other words, when thecrotch strap buckle assembly is buckled, the trigger mechanism 33 can beclosed. The trigger mechanism 33 in the closed state can electricallyconduct the alarming device 20 with the detector 31 to switch thealarming device 20 and the detector 31 to the working state.Furthermore, the driving portion 40 is rotatably connected to the childsafety seat 10. The crotch strap drives the driving portion 40 to rotatearound the child safety seat 10 to switch the trigger mechanism 33 tothe closed state. Specifically, the driving portion 40 includes adriving component 41, a rotating component 43 connected to the drivingcomponent 41 and a pushing protrusion 45 disposed on the rotatingcomponent 43. The rotating component 43 is rotatably connected to thechild safety seat 10. The driving component 41 is connected to thecrotch strap. When the crotch strap buckle assembly is buckled, thedriving component 41 is driven to rotate the rotating component 43, soas to drive the pushing protrusion 45 to push the trigger mechanism 33to switch to the closed state. In order to extend a service life of thedriving portion 40, the driving component 41, the rotating component 43and the pushing protrusion 45 can be integrally formed together. In apreferred embodiment, the pushing protrusion 45 can be an arc-shapedstructure, as shown in FIG. 7 and FIG. 8 . Besides, the child safetyseat alarm system further includes a resilient portion (not shown in thefigures). The resilient portion drives the pushing protrusion 45 to moveaway from the trigger mechanism 33. When the crotch strap buckleassembly is buckled, a resilient force of the resilient portion isovercome, so that the driving component 41 drives the rotating component43 to rotate about the child safety seat 10, and therefore, the pushingprotrusion 45 drives the trigger mechanism 33 to be in the closed state.

Please refer to FIG. 5 . The detection mechanism 30 further includes amounting plate 35 and a power source portion 37. The power sourceportion 37, the detector 31, and the trigger mechanism 33 are disposedon the mounting plate 35. The power source portion 37 is configured toprovide electricity for the detector 31. When the trigger mechanism 33is in the open state, the power source portion 37 does not provideelectricity for the detector 31, and when the trigger mechanism 33 is inthe closed state, the power source portion 37 provides electricity forthe detector 31. The detector 31 can be a distance measuring devicewhich includes a signal processing unit and an emitting unit. Detaileddescription is omitted herein for simplicity. Furthermore, the triggermechanism 33 includes a switch body 331 and a resilient contacting arm333. The resilient contacting arm 333 is disconnected from the switchbody 331 to switch the trigger mechanism 33 to the open state. Theresilient contacting arm 333 is pushed by the pushing protrusion 45 toabut against the switch body 331, and therefore, the trigger mechanism33 is switched to the closed state.

Please refer to FIG. 6 . The alarming device 20 can be an independentcomponent. For example, the alarming device 20 includes a key chain 21,so that the alarming device 20 can be connected with a car key of a userfor the user to take the car key with the alarming device 20. Besides,for example, the alarming device 20 can be installed on a mobileterminal of a user. Specifically, the mobile terminal can be a mobilephone, an IPAD, an in-car apparatus, an intelligent television, a cardkey, a smart key or any other electronic device which is capable ofemitting sound and/or light and/or displaying images. In thisembodiment, the mobile terminal is the mobile phone, and is capable ofboth receiving the signal transmitted from the detector 31 andoutputting the alarm signal when a corresponding application software isinstalled in the mobile phone.

Please refer to FIG. 9 to FIG. 10 . The child safety seat alarm systemfurther includes a linking component 50, and the buckling of the crotchstrap buckle assembly drives the driving portion 40 to move by thelinking component 50. For example, the linking component 50 can be asteel wire. After a male buckle and a female buckle are buckled, thedriving portion 40 is driven by the linking component 50 to switch thetrigger mechanism to the closed state. Specifically, in this embodiment,the trigger mechanism 33 is a switch connected to a wire 60. An end ofthe wire 60 is connected to the detector 31. The driving portion 40drives the switch to be in the closed state or the open state, andtherefore, the detector 31 is switched between the working state and thenon-working state.

Please refer to FIG. 11 to FIG. 13 . In an embodiment, a crotch strapbuckle assembly 70 includes a male buckle 71 and a female buckle 72.Buckling of the crotch strap buckle assembly 70 is achieved by bucklingof the male buckle 71 and the female buckle 72, and the buckling of themale buckle 71 and the female buckle 72 drives the driving portion 40 toswitch the detector 31 to the working state. The child safety seat alarmsystem further includes a power source circuit 80. The detector 31 isdisposed on the power source circuit 80. A power source 81 is disposedon the power source circuit 80 for providing electricity for thedetector 31. Understandably, the power source 81 can be a power socketor a battery. Furthermore, the driving portion 40 can be a conductor.The driving portion 40 is disposed on the male buckle 71. The powersource circuit 80, which can be electrically connected to the detector31, is disposed on the female buckle 72. The buckling of the male buckle71 and the female buckle 72 electrically connects the detector 31 withthe power source circuit 80 by the driving portion 40. Specifically, thepower source circuit 80 is an open circuit, and the buckling of the malebuckle 71 and the female buckle 72 electrically connects the conductorwith the power source circuit 80. That is, the buckling of the malebuckle 71 and the female buckle 72 closes the power source circuit 80 bythe conductor. As shown in FIG. 11 , the male buckle 71 includes a leftmale buckle 711 and a right male buckle 713. The conductor is disposedon the left male buckle 711 and/or the right male buckle 713. Detaileddescription is omitted herein for simplicity. Furthermore, the drivingportion 40 also can be disposed on the female buckle 72. The powersource circuit 80, which can be electrically connected to the detector31, is disposed on the male buckle 71. By using the driving portion 40,the buckling of the male buckle 71 and the female buckle 72 enables thedetector 31 to be in electrical connection with the power source circuit80. Detailed description can be seen in the aforementioned descriptionon the male buckle 71, and therefore, is omitted herein for simplicity.

Please refer to FIG. 1 to FIG. 13 . The operation principle of the childsafety seat alarm system is described as follows.

After the child is seated in the child safety seat 10, the crotch strapbuckle assembly can be buckled to drive the driving component 41 torotate the rotating component 43, so that the pushing protrusion 45 isdriven by the rotating component 43 to switch the trigger mechanism 33from the open state to the closed state. The trigger mechanism 33 in theclosed state electrically connects the detector 31 with the power sourceportion 37, and therefore, both the detector 31 and the alarming device20 are in the working state. When the detector 31 detects that thedistance between the alarming device 20 and the detector 31 is greaterthan the predetermined distance, the alarming device 20 outputs thealarm signal for alarming to remind the user that the child is left in acar.

In contrast to the prior art, when the child safety seat alarm system ofthe present invention confirms that the child is seated in the childsafety seat 10, the driving portion 40 is operated to switch the triggermechanism 33 from the open state to the closed state so as to switch thedetector 31 to the working state. Furthermore, when the detector 31detects that the states of the alarming device 20 and the detector 31meet the predetermined criterion, the alarming device 20 outputs thealarm signal for alarming to remind the user that the child is left in acar. This prevents a dangerous scenario where the child is left in thecar.

The detailed description is provided to illustrate a preferredembodiment of the present invention. However, the present invention isnot limited to the aforementioned embodiment. Any modification or anyequivalent combination which is made according to the nature of thepresent invention should be included in the scope of the invention.

What is claimed is:
 1. A child safety seat alarm system comprising: a child safety seat for a child to be seated therein, the child safety seat comprising a crotch strap and a crotch strap buckle assembly connected to the crotch strap; an alarming device configured to receive a signal and output an alarm signal; a detection mechanism comprising a detector and a trigger mechanism, the detector being configured to detect whether states of the alarming device and the detector meet a predetermined criterion, the detector being in a non-working state when the trigger mechanism is in an open state, and the detector being in a working state when the trigger mechanism is in a closed state; a driving portion, when the child is seated in the child safety seat, the driving portion being operated to switch the trigger mechanism from the open state to the closed state so as to switch the detector to the working state, when the detector detects the states of the alarming device and the detector meet the predetermined criterion, the alarming device outputting the alarm signal for alarming; and a sensing device configured to sense a state of the child safety seat and compare the state of the child safety seat with a predetermined trigger criterion, when the state of the child safety seat meets the predetermined trigger criterion, the child safety seat alarm system confirming that the child is seated in the child safety seat, and the predetermined trigger criterion being that a buckle assembly of the child safety seat is buckled; wherein buckling of the buckle assembly of the child safety seat is achieved by buckling of the crotch strap buckle assembly, the detection mechanism is disposed on the child safety seat, the driving portion is connected to the crotch strap, wherein during buckling of the crotch strap buckle assembly, the crotch strap drives the driving portion to move to switch the trigger mechanism to the closed state.
 2. The child safety seat alarm system of claim 1, wherein the driving portion is rotatably connected to the child safety seat.
 3. The child safety seat alarm system of claim 2, wherein the driving portion comprises a driving component, a rotating component connected to the driving component, and a pushing protrusion disposed on the rotating component, the rotating component is rotatably connected to the child safety seat, the driving component is connected to the crotch strap, and when the crotch strap buckle assembly is buckled, the driving component is driven to rotate the rotating component, so as to drive the pushing protrusion to push the trigger mechanism to switch to the closed state.
 4. The child safety seat alarm system of claim 3, wherein the child safety seat alarm system further comprises a resilient portion, and the resilient portion drives the pushing protrusion to move away from the trigger mechanism.
 5. A child safety seat alarm system comprising: a child safety seat for a child to be seated therein, the child safety seat comprising a crotch strap and a crotch strap buckle assembly connected to the crotch strap; an alarming device configured to receive a signal and output an alarm signal; a detection mechanism comprising a detector and a trigger mechanism, the detector being configured to detect whether states of the alarming device and the detector meet a predetermined criterion, the detector being in a non-working state when the trigger mechanism is in an open state, and the detector being in a working state when the trigger mechanism is in a closed state; a driving portion, when the child is seated in the child safety seat, the driving portion being operated to switch the trigger mechanism from the open state to the closed state so as to switch the detector to the working state, when the detector detects the states of the alarming device and the detector meet the predetermined criterion, the alarming device outputting the alarm signal for alarming; and a sensing device configured to sense a state of the child safety seat and compare the state of the child safety seat with a predetermined trigger criterion, when the state of the child safety seat meets the predetermined trigger criterion, the child safety seat alarm system confirming that the child is seated in the child safety seat, the predetermined trigger criterion being that a buckle assembly of the child safety seat is buckled; wherein buckling of the buckle assembly of the child safety seat is achieved by buckling of the crotch strap buckle assembly, the crotch strap buckle assembly comprises a male buckle and a female buckle, the buckling of the crotch strap buckle assembly is achieved by buckling of the male buckle and the female buckle, and the buckling of the male buckle and the female buckle drives the driving portion to switch the detector to the working state; wherein the driving portion is a conductor, the driving portion is disposed on one of the male buckle and the female buckle, a power source circuit is disposed on another one of the male buckle and the female buckle and for electrically connecting with the detector, and the buckling of the male buckle and the female buckle electrically connects the detector with the power source circuit by the driving portion.
 6. The child safety seat alarm system of claim 5, wherein the driving portion is disposed on the male buckle, and a power source circuit is disposed on the female buckle and is electrically connected with the detector.
 7. The child safety seat alarm system of claim 6, wherein the power source circuit is an open circuit, and the buckling of the male buckle and the female buckle electrically connects the conductor with the power source circuit.
 8. The child safety seat alarm system of claim 5, wherein the driving portion is disposed on the female buckle, and a power source circuit is disposed on the male buckle and for electrically connecting with the detector.
 9. The child safety seat alarm system of claim 8, wherein the power source circuit is an open circuit, and the buckling of the male buckle and the female buckle electrically connects the conductor with the power source circuit.
 10. A child safety seat alarm system comprising: a child safety seat for a child to be seated therein, the child safety seat comprising a crotch strap and a crotch strap buckle assembly connected to the crotch strap; an alarming device configured to receive a signal and output an alarm signal; a detection mechanism comprising a detector and a trigger mechanism, the detector being configured to detect whether states of the alarming device and the detector meet a predetermined criterion, the detector being in a non-working state when the trigger mechanism is in an open state, and the detector being in a working state when the trigger mechanism is in a closed state; a driving portion, when the child is seated in the child safety seat, the driving portion being operated to switch the trigger mechanism from the open state to the closed state so as to switch the detector to the working state, when the detector detects the states of the alarming device and the detector meet the predetermined criterion, the alarming device outputting the alarm signal for alarming; a sensing device configured to sense a state of the child safety seat and compare the state of the child safety seat with a predetermined trigger criterion, when the state of the child safety seat meets the predetermined trigger criterion, the child safety seat alarm system confirming that the child is seated in the child safety seat, the predetermined trigger criterion being that a buckle assembly of the child safety seat is buckled; and a linking component; wherein buckling of the buckle assembly of the child safety seat is achieved by buckling of the crotch strap buckle assembly, the linking component and the driving portion are at least partially disposed on the seat body, the linking component is formed in a wire shape, and the buckling of the crotch strap buckle assembly moves the driving portion by the linking component.
 11. The child safety seat alarm system of claim 10, wherein the trigger mechanism is a switch connected to a wire, an end of the wire is connected to the detector, the driving portion drives the switch to switch between the closed state and the open state, and therefore, the detector is switched between the working state and the non-working state. 